In order to obtain parallel beam,the retical must be in the rear focus planeof it s objective.
为获得平行光，平行光管的分划权必需严格位于物镜后焦面上。
Focal spot measurement of millimeter wave dielectric lens antenna by infrared thermal imaging method;
红外热像法测毫米波介质透镜天线的焦斑
Effect of smoothing by spectral dispersion on the spatial spectrum of focal spot
光谱色散匀滑对焦斑光强频谱的影响
Objective To improve HIFU focal spot accuracy.
目的:提高HIFU焦斑精度。
Design of the Binary Optical Element of Long Focal Depth and Small Spot;
利用二元光学技术实现小焦斑、长焦深的设计
The Study of Designing Diffractive Axicon with a High Lateral Resolution and a Large Depth of Focus;
实现小焦斑长焦深激光焦点的衍射Axicon的设计研究
Effect of smoothing by spectral dispersion on the spatial spectrum of focal spot
光谱色散匀滑对焦斑光强频谱的影响
Study on Curing Control and Focal Spot Measurement of Aspherical Liquid Microlens
非球面液滴微透镜固化控制和焦斑测量研究
Experimental Study of Two-dimensional Orthogonal Segmented Wedge Array Optical System Applied to Uniform Illumination of Large Focal Spot
二维正交光楔列阵大焦斑均匀照明光学系统的实验研究
The Experimental Study of Wide Focus and Low Pressure Shockwave-induced Injury in Rabbit Kidney;
宽焦斑、低压力体外冲击波对免肾脏影响的实验研究
Clinical research on treatment of macula edema with focal argon laser
焦点激光治疗黄斑水肿的临床研究
When a person looks at an object, the image is focused on the yellow spot.
人凝视物时，物像聚焦在黄斑上。
Study on Autofocus Technique and Speckle Reduction in SAR Image Formation;
SAR自聚焦技术及相干斑抑制算法研究
Enhanced optical image edge with laser speckle out-of-focus method
实现光学图像边缘增强的激光散斑离焦法
Optical Parameters Of Selfoc Lens Measured by Modified Spot Way
改进的斑点法测量自聚焦透镜光学参数
The Research of Prism Dispersion Compensation and Speckle Quasi-Confocal in Microscopy;
显微成像中棱镜色散补偿与散斑类共聚焦研究
The affect of pulsed laser deposition upon angle distribution function;
激光聚焦光斑形状对溅射产物角分布的影响
A Mark on the Wall: Feminism and Modernism in Virginia Woolf;
从《墙上的斑点》看伍尔芙的现代主义和女权主义的形象聚焦
Correlation Between Anxiety and Cellular Immunologic Status in Patients with Vitiligo or Alopecia Areata
斑秃、白癜风患者的精神焦虑与细胞免疫功能的相关性研究
Sometimes a ting fragment of charred grass fell on her skin and left a greasy black smudge.
有时候有一片烧焦了的草叶落在她的皮肤上，留下一块油腻腻的黑斑。
Older leaves have ivory-tinted necrotic spots and shreaks coalescing into larger scorched areas; some leaves show pale( faded) yellow chlorosis over whole surface of apical regions.
缺钾的大麦叶片：老叶出现灰白色斑点，逐渐连在一起呈烧焦区域，有的叶片黄化一直到叶尖。
The primary relationship between the size of the focal sp ot and RMS of phase gradient was also given by simulation calculation.
通过模拟计算，给出低频位相噪声的均方根梯度与聚焦光斑尺寸的初步规律。